Marisa Weiss, MD
Radiation Oncology Physician · Wynnewood, PA
Marisa Weiss, MD is a radiation oncology physician with a practice address in Wynnewood, Pennsylvania, and NPI 1457351660, issued on Jul 29, 2005. Check the license (Pennsylvania MD033799E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Marisa Weiss
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- MD033799E PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 E Lancaster Ave, Wynnewood, PA 19096
- Phone
- (610) 645-2433
- Enumerated
- Jul 29, 2005
- Record last updated
- Sep 22, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 0012702160001 PA
- Medicare enrollment
- Enrolled (PECOS I20111102000086); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1984
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 383 in Pennsylvania → Look up another NPI →
Also registered at 100 E Lancaster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marisa Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD033799ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average radiation oncology physician in 2024
191 Medicare Part D claims for 96 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Triamcinolone Acetonide145 claims
- Betamethasone Dipropionate30 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $12,187.74
44 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Main Line Radiation Oncology PCWynewood, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marisa Weiss among 383 radiation oncology physician records in Pennsylvania
Marisa Weiss, MD is one of 383 radiation oncology physician records with a practice address in Pennsylvania. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 83% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1984 · median 2004 among the 285 with a school on file
- Record last updated2011 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Pennsylvania
There are 383 radiation oncology physician records in Pennsylvania.
All 383 in Pennsylvania → Every provider in Wynnewood → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Cristina Decesaris, M.D.Wynnewood, PA 190961083069744
- Albert Denittis, MDWynnewood, PA 190961134129349
- Usha Babaria, MDPhiladelphia, PA 191021346229705
- Lydia Komarnicky, MDPhiladelphia, PA 191021487610820
- James Kolker, MDPhiladelphia, PA 191041568433373
- Robert Krisch, MDPhiladelphia, PA 191041144298563
- William Levin, M.D.Philadelphia, PA 191041316920234
- Suneel Nagda, MDPhiladelphia, PA 191041356388839
Common questions
What is Marisa Weiss, MD's NPI number?
Marisa Weiss, MD's National Provider Identifier (NPI) is 1457351660, issued on Jul 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marisa Weiss, MD located?
The NPPES record lists a practice address at 100 E Lancaster Ave, Wynnewood, PA, 19096. Phone: (610) 645-2433. Providers update this record themselves, so call before visiting.
How can I verify Marisa Weiss, MD's license?
NPPES lists Pennsylvania license number MD033799E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marisa Weiss, MD prescribe under Medicare Part D?
In 2024, Marisa Weiss, MD had 191 Medicare Part D claims for 96 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.